Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a538ef31698a7a…

MALICIOUS

PDF

37.5 KB Created: 2020-09-10 14:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99179fddca1c026e81f392d246adc03e SHA-1: 248d4e42c35d8608d3dbb939763277a309c728a8 SHA-256: 07a538ef31698a7a7d8c437a073000f464d665b1b7df5d6cf8480c131fa5d122
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, many of which point to redirectors and SEO link farms designed to obscure the final destination. The document body, though heavily obfuscated, contains URLs that are likely part of a phishing or malware distribution scheme. The presence of a malicious redirector link and the ML classifier's high confidence score indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/pify?keyword=compound+shapes+area+worksheet+pdf In PDF document text
    • http://files.ellianajolenasbows.com/uploads/1/3/0/8/130813852/lurem-koxubuxobowe.pdfIn PDF document text
    • http://files.goddessashley.com/uploads/1/3/2/6/132682655/fefapupizibaro_ralimovazabid_kabaj.pdfIn PDF document text
    • http://files.bathcantatagroup.co.uk/uploads/1/3/2/6/132681359/nefodu.pdfIn PDF document text
    • http://bakofok.ellisbirdfarm.ca/uploads/1/3/1/1/131164250/zipukesamem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/cf5aa9_bef42731c7cf486994313c737d33b7e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ca9b0a_1bf92f2567b14f4cadca9ec009cff8f4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33a2e4_52d2d700d34e484d888a38804dbb72b0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/55cc32_60664baa4b33428694754856e395e964.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fc3b0b_3cf52ee31c53472ba3262e79cad2a087.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b1b3ad_b78d49a168594ae78156fc970479e464.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6dcf04_e27f252e57194ca1ba9bf42b97a4a2f3.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55C3 5308 bytes
SHA-256: 3392d85d87bf8403a04faca11c038f1a29d8f02836cc55a24ce0a1fad31d5e7f
font_01_sfnt_off000067b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B2 9840 bytes
SHA-256: 7ae3d02dd10eac335a5bb92454fb767b21ab9ded08787643ff2f6be1e311920b

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